Lifting, transporting and placing device



` Feb. 26, 1957 H. F. BEsELER 2,782,940

LIFTING, TRANSPORTING ANU PLACING DEvIcE .2616 on 2o I N V E N T0 R /mmA/F 35551.51?

@may

Feb. 26, 1957 H. F. BESELER LIFTING, TRANSPORTING AND PLACING DEVICE' Filed July 21. 1952 2 Sheets-Sheet 2 Ilz INVENTOR United States Patent O LIFTING, TRANSPORTING AND PLACING DEVICE Herman F. Beseler, Minneapolis, Minn.

Application July 21, 1952, Serial No. 300,059

4 Claims. (Cl. 212-59) This invention relates to a device used in connection with a vehicle for lifting and moving a tree, which tree is preferably supported in a sling. Persons in the landscaping business, nurserymen and others, now lift and move trees of greatly varying sizes in very great numbers. It is desirable therefore to have a simple and efcient apparatus by means of which the trees can be most elliciently and economically handled.

It is one object of this invention to provide a treehandling apparatus comprising a support, a mast mounted on said support and arranged preferably for swinging movement about a plurality of axes, said mast having a rotatable or oscillatable boom mounted thereon, said boom supporting a cable forming part of a hoist having means for engaging the load to be lifted.

It is an object of this invention to provide an apparatus comprising a vehicle having movable supporting means such as wheels or an endless track and comprising a platform or its equivalent, a mast mounted on said platform swingable about axes at an angle to each other, preferably substantially a right angle, means for swinging said mast about said axes and a boom carried at the upper end of said mast extending outwardly therefrom, together with a hoist including a cable carried by said boom, said cable having means at one end for engaging said tree or a sling carrying said tree, together with means for operating said hoist and moving said cable to lift and move said tree.

It is a further object of the invention to provide such an apparatus as set forth in the preceding paragraph in which said boom is rotatable about an axis extending longitudinally of said mast, together with means for rotating said boom to different positions and holding it in said position.

It is another object of the invention to provide a treehandling apparatus comprising a wheeled vehicle having a platform, a member mounted onpsaid platform and extending longitudinally thereof and being movable about an axis extending longitudinally of said platform, a mast pivoted adjacent its lower end to said member to move about an axis extending transversely of said platform, means such as push and pull jacks for swinging said mast about both of said axes respectively, a boom rotatable about the upper end of said mast and extending to one side thereof, sheaves carried by said boom, a cable running over said sheaves and having means at its end to engage a load, such as a tree-carrying tree sling, together with means such as a winch for moving said cable to lift said load.

lt is still another object of the invention to provide a tree-handling apparatus comprising a movable vehicle having a platform, a mast mounted on said platform for swinging movement about a plurality of axes, a boom carried by said mast and extending to one side thereof, means for swinging said mast so that said boom can project over the side of said platform, a hoist carried by said boom for engaging a load, and means connected to said platform adjacent the rear thereof and at the 2,782,940 Patented Feb. 26, 1957 sides thereof extending downwardly and comprising portions having lower surfaces to engage the ground or blocks supported upon the ground for rigidly supporting said platform and preventing overturning of the vehicle when a heavy load is lifted at the side thereof.

It is also an object of the invention to provide such a structure as set forth in the preceding paragraph, said means comprising a member swingingly supported at its upper end so that it can be swung upward when not in use, said member being extensible and contractible.

These and other objects and advantages of the invention will be fully set forth in the following description made in connection with the accompanying drawings in which like reference characters refer to similar parts throughout the several views and in which:

Fig. 1 is a view partly in transverse vertical section and mostly in rear elevation showing the apparatus;

Fig. Z is a fragmentary view similar to Fig. 1 showing a modification said view being mainly in side elevation and partly in vertical section;

Fig. 3 is a view in side elevation of the apparatus, some parts in Figs. 1 and 3 being indicated in different positions in dotted lines;

Fig. 4 is a fragmentary view in side elevation of some of the parts shown in Fig. l;

Fig. 5 is a View partly in rear elevation and partly in vertical section showing a modification;

Fig. 6 is a horizontal section taken substantially on line 6 6 of Fig. 5;

Fig. 7 is a view in side elevation as seen from the right of Fig. 5 as indicated byline 7-7;

Fig. 8 is a view in side elevation of ak small portion of the parts in Fig. 7, as indicated by line 8 8; and

Fig. 9 is a fragmentary view in side elevation showing a modification of the boom used, some parts being broken away and others shown in vertical section.

Referring to the drawings, a vehicle 10 is shown, the same having a body comprising a platform 10a, and having movable supporting means such as the wheels 10b. Said vehicle is shown as having springs 10c between the axle housing 10a' thereof and the platform 10a. Said springs 10c are shown as secured to the platform by brackets 11. While said springs 10c could be secured to said axle housing in various ways, they are shown as secured by spaced U bolts 13 extending through a plate 16 and having nuts 13a secured thereto beneath said plates. While said body and platform might be variously made, in the embodiment of the invention illustrated the same comprises a rectangular frame portion 10e to which brackets 11 are connected, together with longitudinally extending members or stringers 10i supported on frame 10e. The platform 10a comprises a top portion or a floor and the supporting transverse members 10g. The vehicle 10 illustrated is of the type of a commercial truck and a portion of the operators cab 10h is shown.

A member 12 is provided extending longitudinally of platform 10a and having trunnions 12a at its ends which are oscillatably supported in bearings 14 secured to the top of platform 10a by U bolts 16 which extend downwardly about members 10]c and the side members of frame 10e and are provided at :their lower ends with nuts 17. Member 12 is disposed at one side of the transverse center of platform 10a and has one end adjacent the rear end of said platform. The real-most U bolt 16 also extends through a transversely extending bar 18 and the nuts 17 engage the bottom of said bar 18. Bar 18 engages Ithe lower side of frame 10e, extends somewhat beyond the sides of said frame and has its outer ends bent downwardly at a decided angle illustrated at substantially 30 degrees to the vertical. A mast 20 is provided, the same having spaced plates at its lower end which are pivotally connected by a pivot pin 22 vto member 12. Pin 22 is shown at substantially the longitudinal center of member 12. Mast '20 has mounted thereon at its upper end a boom 24, the same engaging at its lower side a ring 20a on mast 2t! and engaging at its upper end a similar ring 20b. Boom 24 extends outwardly from mast 20, the same being shown as a hollow structure and having a bore at its outer end in which is fitted and is rotatable the cylindrical end 26a of a sheave-carrying 'bracket 26. Bracket 26 has a collar portion engaging the outer end of boom 24 and is bifurcated to receive a sheave 27 rotatably mountedtherein on a pin 2S. A collar 25 is secured to the rear-endrof portion 26a for holding it in place. Bracket 26'hasdep'ending arms which vsupport a cylindrical guide portion26b which is apertured to have a cable pass therethrough. Boom 24 also has'mountedtherein on a-pin`3 1 a-'sheave- 32. Another sheave 34 is rotatably mounted on afpi'n 3 5 carried in lugs projecting from one side of'mast'20. A hoist is provided comprising'a cable 36 having secured to oneendzthereof a hook 37`adapted to engage a load, such'asthe sling 38, disposed about a ball 40a`enelosing the roots'of a tree 40. Cable 36 runs over rt'hesheave 27 through portionV 26a of bracket 26, through the' boom 24 and oversheave 32,'then downwardly through the mast 20 and under thesheave 34. Said cable then is wound on the drum @having/trunnions carried lin spaced brackets 43 secured to platform a by the headedand nutted bolts 44. Drum 42 is provided at 'one end witha gear 45 with which is adapted to engage a pawl 47 pivotally mountedon a'pin 48 earried in oneof the brackets 43. Another gear 46'meshes with gear 45, the same ybeing carried on a shaft49 journale'd'in vbrackets 43 and having secured to one end thereof a crank handle 50 disposed at one side of platform 10a. -It will be seen that by turning crank 50 the cable can be wound or unwound relatively to drum 42 and said-drum and cable can be held in lixed position by the pawl 47. A-pair of spaced U bolts 52 are provided and respectively secure bearings 53 to platform 10a, said bolts extending through said platform and a plate 54 engaging the bottom of one of the members 10g and being provided with nuts 55. A shaft 56 extends through the bearings 53 and through the hub of a clevis member 58 having spaced arms between which is disposed the aperturedV end of a screw 59, said end being pivoted to member 58 by the pin 60. Another screw 62 having a thread of opposite pitch to that on screw 59 has its end pivoted by a pin 63 to lugs 20c projecting from mast 20. A sleeve-like nut 64 is threaded at its opposite ends to receive the screws 59 and 62. Said nut 64 has ratchet teethV 64a on its exterior at its midportion, and a bracket 66 of-a ratchet embraces and is oscillatable on nut 64, the same having a reversible pawl 65 pivoted thereto adaptedto engage the teeth 64a. Bracket 66 has ahandle portion 67. It will be seenthat by oscillating the member that nut 64 can berotated to move screws 59 and 62 towardv'or` awayfrom each other. Members 59 to 67A constitute a contractible and expansible device-commonly known as a push and pull jack. By operation of said jack it will-be seen that mast and member 12 can be swung about the axes of trunnions 12a.

A"riieniber 75 is threaded at one end to constitute a nut and is pivoted at its lower end by a pin 68 to member 12 at onepjside ofthe pivot-22. A screw 74 is threaded into member 75 and is provided with ratchet teeth 74a. A ratchet bracket 70 embraces screw 74 at each side of teeth 74a and carries a reversible pawl 71 adapted to cngage't'eeth 74a. rBracket 70 has secured thereto a handle portion 72. A screw 73 is threaded into screw 74 and has threads of opposite pitch from those of screw 74. screw 73vhaving a head portion pivoted by a pin 69 to spaced lugs 20d projecting from one side of mast 20. The structure is the same as shown in Fig. 5. Member 12 is provided with an additional aperture 12b in which pin 68 could be inserted under certain conditions. It will be 'seen that by operation of the ratchet 70--72 that mast 20 can be swung about the axis of pivot 22.

it Mast 20 is thus swingable about axes disposed substantially at right angles to each other, and in the embodiment of the invention illustrated one of these extends longitudinally of platform 10a and the other extends transversely thereof.

Boom 24 has secured thereto within the ring 2011 a worm-wheel gear, such as shown in Fig. 5, with which meshes a worm, not shown, similar to that shown in Fig. 5. Said worm is carried on a shaft 23 having secured to one end thereof a crank handle 25. By turning crank handle 25 boom 24 can be moved to different positions circumferentially of mast 20.

Lug brackets 76 are secured to beveled undersurfaces of one of the transverse members 10g and extend substantially parallel to the ends of bar 18. A member 77 of general triangular form is provided and has a hub portion 77a bored to receive a headed and nutted bolt 78a which extends through bracket 77 and the adjacent end of bar 18. There is one of the 'members 77 at cach side of the vehicle. A portion 77h of member 77 is threaded to receive a screw 78 rotatably mounted in a base member 79 having a iiat bottom surface adapted to engage the ground or the inclined surface of a block 80 resting on the ground. Screw 73 has secured thereto a handle 31 having portions projecting at each side thereof. A bar is provided at each side of platform 10a, the same having an upper apcrtured end Vsecured by a bolt 84 to a block 86 secured to platform 10a. Each bar 83 adjacent its lower end is provided with a plurality ot holes 83a through any one of which a headed pin 87 may extend, said pin also extending through a hole in a lug 77e` projecting from a member 77. The members 77 form rigid supports for rigidly supporting the platform 10a from the ground and thus taking the load off of thespr'ings 10c. The members 77 extend outwardly somewhat from the sides of platform 19a and form braces to prevent the overturning of the vehicle when a heavy load is being lifted or lowered at lthe side of the platform. as shown in Fig. 3. When not in use the members "/7 can be swung upwardly and inwardly about the axes of bolts 78 respectively. A pivoted hook or loop 39 is secured to frame 10e and adapted to engage over member 77 to hold the member 77 in operative position.

In operation when a tree is to be lifted and placed on the vehicle 10, the jacks comprising the handles 67 and 72 will be operated to swing mast 20 and boom 24 to substantially the position shown in Fig. 3. The operator will now turn crank handle 50 so that cable 36 and hook 37 will be lowered sutliciently to engage hook 37 with a portion of the sling 38. Handle 50 will now be turned in a direction to wind cable 36 on the drum 42 and the load comprising the sling 38 and the tree 4t) will be lifted. When the load is in the position shown in Fig. 3 or slightly -thereabove, the ratchet comprising handle 72 will be operated and mast 20 will be swung toward the vertical. VThe crank 25 can be operated to swing the-boom aboutv the longitudinal axis of mast 20 and by this manipulation and by operating the ratchet including handle 67, the tree 40 and the ball 40a with sling 38 can bedeposite'd in any desired position on the platform 10a. As shown in dotted lines in Fig. 3, mast 20 can be swung forwardly toward the cab 10h and by this movement of ofthe lmast and the movement thereof about trurmions 12a and by moving the boom 24 it will be seen that as above stated the ball 40a can be placed in any desired position on platform 10a. The trunk of the tree can be swung and disposed as desired. It will be seen that when ratchet lever 72 is operated, screws 73 and 74 will actto extend or contract the jack. Pin 68 can be placed in aperture 12b under some conditions to slightly vary the position and movement of mast 20. It will be obvious that the tree'can be unloaded from the truck and deposited in 'a planting hole by a reverse procedure in the above described operation. In all cases it will not be necessary to swing the boom 24. In some cases the tree can be loaded without using the push and pull jacks to swing the mast. The load can be swung as desired by merely operating the boom. This is particularly true when handling small trees or loads. The members 77 which also constitute jacks are very useful in the loading and unloading operations. When handling heavy loads it is desirable to take the load olf of the springs 10c. This is done when jacks 77 are placed in the position shown in Figs. l and 3. Jacks 77 form a rigid support for the platform 10a giving much greater stability in the loading operation so that the positions of the mast 20 and boom 24 can be positively determined without vibration of the springs. By adjusting pin 87 or placing it in different holes 83a the jacks 77 can be made to extend downwardly and rearwardly. This gives a good support to the vehicle and even if the brakes should not hold on a slope the vehicle would be firmly held in position. By having the members 77 extending outwardly transversely of the vehicle a good base is provided so that the vehicle will not overturn when lifting heavy loads from the side thereof. If the vehicle has to be positioned on the side of a hill for the planting or loading operation, the screws 78 can be adjusted on the low side to hold the platform'llla level or in the desired position. The jacks 77 thus constitute a very desirable feature and make the loading and unloading movements safe and certain. As stated, the jacks 77 can be swung into inopeartive position when the vehicle is moving for transporting loads, as indicated in dotted lines in Fig. 3. In the loading and unloading operation the engine and forward part of the truck constitute in effect a counterweight for the load which is lifted at the rear portion of the truck. The jacks 77 act as a fulcrum, and as stated give a very firm and positive operation. The wormwheel and worm is used for turning boom 24 so that the boom cannot swing freely. It is dangerous to have a boom that can swing freely as this often results in an undesired swinging of the load and the capsizing of the vehicle. By having the bracket 26 rotatable about' portion 26a, the sheave 27 and cable 36 can be directed laterally of the boom so that the tree can be pulled upon and lifted from either side. By having the sheave 34 at one side of the mast and at some distance from the axis thereof when the mast is raised from a lateral position, as shown in Fig. 3, to a substantially vertical position, the wrap of the hoisting cable 36 about sheave 27 is compensated for by the change in position of sheave 34. This prevents an undesirable tightening of the cable and undesirable strain thereon so that danger of breaking the cable is eliminated. The mast 2t) can be tilted to its extreme forward or rearward position when the vehicle is moving in transportation so that the overall height is reduced and the vehicle can move under overpasses and through tunnels. While the mast and member 12 could be placed in different positions, it has been found in practice that the position shown on the drawings result in very ehicient action. 'Ehe jacks comprising handles 67 and 72 are pivoted by pins which are easily removable so that the jacks can be removed when desired.

In Fig. 2 a slightly different form of the jacks 77 is shown. instead of having the screw 78 extending longitudinally of the outer side of the jack 77, a member 95 is provided which is pivoted to bracket 78 and bar 18 and cooperates with bar 83, as does the member 77. A lug 95a is provided which extends laterally transversely ot' the vehicle and a screw 96 is threaded into lug 95a, the same having an operating handle 97 secured to its upper end. Screw 96 is rotatably connected to a base member 9S having a flat bottom surface adapted to engage the ground or the surface of a block Si) disposed on the ground. By operating handle 97 the member 95 and platform 16a can be raised or lowered by motion of screw 96.

In Figs. to 8 a further modification is shown. A

member 112 is provided corresponding to member 12 already described, and the same has secured thereto trunnions 11211 oscillatable in bearings 114 secured to the platform 10a and frame 10e by U bolts 116 similar to U bolts 16. A Ymast is pivoted to member 112 by the pin 122. A boom 124 is rotatable about the upper portion of mast 120, the same resting against a collar 121m on said mast and engaging at its upper end another collar or ring 120d. Mast 120 has a wormwheel gear 121 secured thereto with which meshes a worm 125 secured to a shaft 123. Shaft 123 is shown as having a ratchet mechanism 126 thereon having a handle 126a. it will be seen that by operation of ratchet 126, shaft 123 will be rotated and the boom 124 will swing about mast 120. Boom 124 extends laterally and has a pin 127 therein adjacent its outer end to which is secured one end of a cable 13d. Cable 130 runs under and supports a sheave 131 mounted on a shaft 132 on which is also mounted a bracket 133 having rotatably mounted thereon a hook 134, which, like hook 37, is adapted to engage the load. Boom 124 carries another sheave 136 rotatable on a pin 137 and also has mounted thereon another sheave 139 rotatable on a pin 140. Cable 130 runs over sheave 136 and over sheave 139, the same travelingl inside of boom 124 which is of hollow or of box form in cross section. Cable extends downwardly from sheave 139 and passes under a sheave 142 rotatable on a pin or shaft 143 secured in mast 120. Cable 130 then passes to and is wound on a drum 144 mounted on a shaft 145 which is carried on member 112. A gear 146 is secured to drum 144 at one side thereof with which cooperates a pawl 148. Gear 146 has meshing therewith a gear 150 mounted upon a shaft 151 journaled in member 112, the same having an end at one side of member 112 of polygonal shape in cross section on which is disposed a ratchet 153 having an operating handle 1530. Handles 126e and 153e, as shown in Fig. 7, have plate portions cooperating with a portion of their respective ratchets, said piate portion havi-ng circumferentially spaced apertures 126b and 153b. Pins 126C and 153C respectively can extend through different holes 126b and into a hole on ratchets 126 and 153 to hold the handles 12f5a and 153a respectively in longitudinal alignment with their ratchets or at right angles thereto, as show-n by dotted lines in Fig. 7. When said handles are in the right angle position, as shown in dotted lines, the ratchets can be operated as cranks. The shaft 145 projects at one side of member 112 and the same has its end formed of polygonal shape in cross section so that it is adapted to receive a crank or ratchet.

A push and pull jack comprising a member 154 is provided, said member being pivoted to member 112 by a pin 155. Another hole 11211 is provided in which pin 155 may sometimes be disposed. A screw 156 is threaded into member 154 and thas ratchet teeth 156a thereon with which cooperates a ratchet 157 hav-ing an operating handle 157a. A screw 159 of opposite pitch to that on screw 156 is threaded into screw 156 and has a head portion pivoted by a pin 16d to spaced lugs 120C projecting laterally from mast 120. This structure is identical with that already described comprising parts 70 to 75. It will be seen that by operating ratchet 157, mast 120 can be swung about the axis of pin 122. Another push and pull jack comprising a sleeve 162 having ratchet teeth thereon engaged by a ratchet 163 having a handle 163a is provided. Screws 164 and 165 of opposite pitch are threaded respectively into the ends of sleeve 162. Screw 165 has a head portion pivoted by pin 166 to spaced lugs 120d projecting from the side of mast 120. Screw 164 has a head portion pivoted by pin 168 to a bifurcated bracket 169 having a cylindrical portion through which extends a shaft 170 about which bracket 169 is swingable. Shaft 170 extends through bearing members 171 secured to the platform 10a and vehicle frame 10e by spaced U bolts 172.

The operation of the mechanism shown in Figs. 5 to 8 issubstantially: ythesameas. .that .alreadydeseribed in connection with Figs. 1 to ,3. The mast 120 can .beswung about -the axisof'pin 122 by use of the push and pull jack comprisingthe ratchet 157. The mast 120 can also be swung about the axesy of .trunnions 112e, which axis, like the axis of trunnions 12a, extends longitudinally of the vehicle. This latter swinging movement is etected by operation ofthe .push and pull jack comprising ratchet 1 63. The load will ,be engaged by hook 134 and will be lifted by moving cable 130 by means of the winchV comprising drum 14.4 and the ratchet 153. 1t will be seen that ih@ drum `144a11d the .rest of the winch comprising the same is mounted on member 122.,instead of being mounted on platform 10a, as shown in Figs. 1 and 3. Itis believed further description of the operation is unnecessary.

I n Figs. 9.and .1.0 a slightly different structure is shown for the portions 24 and 124, The cable or chain 180 will run over-.sheave oripulley 1810i` usual construction which is swivelly carried by hook 183. Hook 183 will be carried by an apertured lug 184:1 depending through the bottom of arm or boom 186 corresponding to arms 24 and 124 shown in Figs. land 5. Lug 184a forms part of a nut 184 threaded on aV screw 185 journaled in bearings 186a and 186b in arm 186. Screw 185 is provided with a ratchet wheel 187 adapted to be engaged by an oscillatable ratchet lever 188 carrying a pawl engaging the teeth on ratchet wheel 187. Ratchet lever 188 may be substantially like ratchet lever 72 and parts carried thereby as shown in Fig. 3. Lever 188 can project through an aperture 186e in arm 186. The chain or cable 180 will pass over pulley 181 and over pulley 189 journaled in bearings in arm 186 and corresponding to pulleys 32 and 139 shown in Figs. 3 and 5. Arm 186 will be rotated on the column as shown in Figs. l and 5. The gear such as gear 124 shown in Fig. 5, can be arranged to be readily rotatable on the columnby removing its attaching screw. Arm 186 can then at times have a slight swinging movement about the axis of the column. Instead of the cable or chain 180 running over pulleys 181 and 189, member 181 can constitute an ordinary hand operated chain hoist. The load willl then be lifted by the chain hoist instead of being lifted by the cable and windlass shown in Figs. 3 and 5.

With the described construction a very line adjustment can be given to the load supporting hoist 181 by moving nut 184 on screw 185. This will be done by operation of ratchet levcr'l. By operation of the ratchet lever 163m shown in Fig. 7, the mast can be moved sidewise in either direction a short distance. This will give a further adjustment of the hoist 181. veiy accurately placed either longitudinally or transversely of arm 186.

From the above description it will be seen that l have provided a simple and efficient tree-handling and transporting apparatus. As above described, the tree can be easily and conveniently lifted and deposited upon a platform which may comprise a portion of a movable vehicle. The trees can be conveniently disposed in the desired position .on such a platform or vehicle. The structure is comparatively simple and the parl's have been arranged to give the greatest convenience and efficiency. The device has been invented and constructed to meet many problems encountered in a long experience in the art. The device has been amply demonstrated in actual practice, found to be very successful and efiicient, `and the same is being commercially made.

It is also apparent that the device would have a high degree of utility in handling various articles, such as pipes, castings, tanks, engines, `including airplane engines, and other articles to be lifted and lowered, particularly where accurate placingis desired and where non-level ground is encountered.

It will of course, be understood that various changes may be made in the form, details, arrangement and proportions of the parts, without departing from the scope The load handled can thus be Cil .8 of applicants invention, `which generally stated, consists ina `,device capable of carrying out the objects above set forth, in the parts and combinations of parts disclosed and defined inthe appended claims.

What .is claimed is:

1. A tree-handling device having in combination, a vehicle having supporting wheels and a platform, a member 'mounted on said platform extending longitudinally thereof and swingable about anv axis extending longitudinally of said platform, a mast carried by said member and pivoted thereto adjaent its lower end about an axis extending transversely of said platform, means connected at its ends to said mast and member respectively and extensible and contractible for switching said mast about said last 'mentioned axis, means connected at its end to said mast and platform respectively and extensible and contractible for moving said mast about said rst mentioned axis, a boom rotatably carried on said mast at the upper end thereof and extending outwardly therefrom, means including a hand operated member for rotating said boom,`a nd a hoist having means adapted to engagea load comprising a cable supported by said boom.

2. The structure set forth in claim 1, said boom having sheaves mounted thereon and said cable running over said sheavesand having a hook at one end adapted to engage a load, said hoist also including a winch for moving and holding said cable.

3. A tree-handling device having in combination, a vehicle having movable supporting means and a platform, .a mast supported on said platform for movement about axes disposed substantially at right angles to each other, a push and pull jack pivotally connected to said platform .and mast for swinging said mast about one of said axes, a second push and pull jack pivotally connected to said mast for swinging it about the other of said axes, a boom at the upper end of said mast and rotatable about an axis extending longitudinally of said mast, means for rotating said boom including a hand crank adjacent the upper end of said mast, said boom having a sheave at its outer end, a cable running over said sheave and having means at one end for engaging a load, and means for moving said cable to raise or lower a load comprising a drum on which said cable is wound, and a crank at one side of said platform for rotating said drum.

4. A tree-handling device having in combination, a vehicle having movable supporting means and a platform, a mast supported on said platform for movement about axes disposed substantially at right angles to each other, a push and pull jack pivotally connected to said platform and mast for swinging said mast about one of said axes, a second push and pull jack pivotally connected to said mast for swinging it about the other of said axes, a boom at the upper end of said mast and rotatable about an axis extending longitudinally of said mast, said boom having a sheave at its outer end, a cable running over said sheave having means at one end for engaging a load, and means for moving said cable to raise or lower a load comprising a drum on which said cable is wound, and a crank at one side of said platform for rotating said drum.

References Cited in the le of this patent UNITED STATES PATENTS 146,835 Mallory Jan. 27, 1874 535,537 Gates Mar. 12, 1895 663,109 Tucker Dec. 4, 1900 998,469 Craig July 18, 1911 1,400,540 Gloor Dec. 20, 1921 1,423,724 Mascetti July 25, 1922 1,721,546 Cummings et al. July 23,v 1929 (Other references on following page) UNITED STATES PATENTS McClain June 1, 1937 Ormsby Feb. 22, 1938 McGiffert et al. Sept. 27, 1938 Wilmore Apr. 30, 1940 5 Johnston Feb. 29, 1944 

